摘要
南极冰、雪及冰川沉积物中，特别是在富集陨石的冰区内发现和收集了较大量的宇宙尘、微陨石及火山成因的尘粒带，在非南极地区的大气平流层和深海沉积物中也收集到了宇宙尘。按其宇宙尘分布特征划分为行星际宇宙尘和恒星际宇宙尘。按其成因将宇宙尘划分为彗星成因、小行星成因、陨石消融成因及恒星际成因或前太阳的尘粒或粒子，并提出了判别宇宙尘的综合标志。
A large number of cosmic dust particles,micrometeorites and volcanic dust bands have been found and collected in Antarctic ice,snow and glacial sediments,especially in meteorite concentrated regions. Extraterrestrial spherules aslo have been discovered from the stratosphere and deep sea sediments. On the basis of distributive characteristics cosmic dust particles are classified into interplanetary dust particles and interstellar dust particles. According to their origin,cosmic dust particles can be divided into cometary origin,asteroidal origin,ablation from meteorites and interstellar origin. The criteria for identifying cosmic dust particles have been established and the origin of cosmic dust particles has aslo been discussed in this paper.
出处
《南极研究》
CSCD
1994年第4期2-13,共12页
基金
国家南极考察委员会资助
中国科学院八五重大基础资助
关键词
行星际
宇宙尘
冰
雪
南极地区
沉积物
s Antarctica,interplanetary cosmic dust particles,interstellar cosmic dust particles.
